1 /* Support for the generic parts of PE/PEI, for BFD.
2 Copyright 1995, 1996, 1997, 1998, 1999, 2000 Free Software Foundation, Inc.
3 Written by Cygnus Solutions.
5 This file is part of BFD, the Binary File Descriptor library.
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
19 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
22 Most of this hacked by Steve Chamberlain,
25 PE/PEI rearrangement (and code added): Donn Terry
29 /* Hey look, some documentation [and in a place you expect to find it]!
31 The main reference for the pei format is "Microsoft Portable Executable
32 and Common Object File Format Specification 4.1". Get it if you need to
33 do some serious hacking on this code.
36 "Peering Inside the PE: A Tour of the Win32 Portable Executable
37 File Format", MSJ 1994, Volume 9.
39 The *sole* difference between the pe format and the pei format is that the
40 latter has an MSDOS 2.0 .exe header on the front that prints the message
41 "This app must be run under Windows." (or some such).
42 (FIXME: Whether that statement is *really* true or not is unknown.
43 Are there more subtle differences between pe and pei formats?
44 For now assume there aren't. If you find one, then for God sakes
47 The Microsoft docs use the word "image" instead of "executable" because
48 the former can also refer to a DLL (shared library). Confusion can arise
49 because the `i' in `pei' also refers to "image". The `pe' format can
50 also create images (i.e. executables), it's just that to run on a win32
51 system you need to use the pei format.
53 FIXME: Please add more docs here so the next poor fool that has to hack
54 on this code has a chance of getting something accomplished without
55 wasting too much time.
60 static boolean (*pe_saved_coff_bfd_print_private_bfd_data
)
61 PARAMS ((bfd
*, PTR
)) =
62 #ifndef coff_bfd_print_private_bfd_data
65 coff_bfd_print_private_bfd_data
;
66 #undef coff_bfd_print_private_bfd_data
69 static boolean pe_print_private_bfd_data
PARAMS ((bfd
*, PTR
));
70 #define coff_bfd_print_private_bfd_data pe_print_private_bfd_data
73 static boolean (*pe_saved_coff_bfd_copy_private_bfd_data
)
74 PARAMS ((bfd
*, bfd
*)) =
75 #ifndef coff_bfd_copy_private_bfd_data
78 coff_bfd_copy_private_bfd_data
;
79 #undef coff_bfd_copy_private_bfd_data
82 static boolean pe_bfd_copy_private_bfd_data
PARAMS ((bfd
*, bfd
*));
83 #define coff_bfd_copy_private_bfd_data pe_bfd_copy_private_bfd_data
85 #define coff_mkobject pe_mkobject
86 #define coff_mkobject_hook pe_mkobject_hook
88 #ifndef NO_COFF_RELOCS
89 static void coff_swap_reloc_in
PARAMS ((bfd
*, PTR
, PTR
));
90 static unsigned int coff_swap_reloc_out
PARAMS ((bfd
*, PTR
, PTR
));
92 static void coff_swap_filehdr_in
PARAMS ((bfd
*, PTR
, PTR
));
93 static void coff_swap_scnhdr_in
PARAMS ((bfd
*, PTR
, PTR
));
94 static boolean pe_mkobject
PARAMS ((bfd
*));
95 static PTR pe_mkobject_hook
PARAMS ((bfd
*, PTR
, PTR
));
97 #ifdef COFF_IMAGE_WITH_PE
98 /* This structure contains static variables used by the ILF code. */
99 typedef asection
* asection_ptr
;
105 struct bfd_in_memory
* bim
;
106 unsigned short magic
;
109 unsigned int relcount
;
111 coff_symbol_type
* sym_cache
;
112 coff_symbol_type
* sym_ptr
;
113 unsigned int sym_index
;
115 unsigned int * sym_table
;
116 unsigned int * table_ptr
;
118 combined_entry_type
* native_syms
;
119 combined_entry_type
* native_ptr
;
121 coff_symbol_type
** sym_ptr_table
;
122 coff_symbol_type
** sym_ptr_ptr
;
124 unsigned int sec_index
;
128 char * end_string_ptr
;
133 struct internal_reloc
* int_reltab
;
137 static asection_ptr pe_ILF_make_a_section
PARAMS ((pe_ILF_vars
*, const char *, unsigned int, flagword
));
138 static void pe_ILF_make_a_reloc
PARAMS ((pe_ILF_vars
*, bfd_vma
, bfd_reloc_code_real_type
, asection_ptr
));
139 static void pe_ILF_make_a_symbol
PARAMS ((pe_ILF_vars
*, const char *, const char *, asection_ptr
, flagword
));
140 static void pe_ILF_save_relocs
PARAMS ((pe_ILF_vars
*, asection_ptr
));
141 static void pe_ILF_make_a_symbol_reloc
PARAMS ((pe_ILF_vars
*, bfd_vma
, bfd_reloc_code_real_type
, struct symbol_cache_entry
**, unsigned int));
142 static boolean pe_ILF_build_a_bfd
PARAMS ((bfd
*, unsigned short, bfd_byte
*, bfd_byte
*, unsigned int, unsigned int));
143 static const bfd_target
* pe_ILF_object_p
PARAMS ((bfd
*));
144 static const bfd_target
* pe_bfd_object_p
PARAMS ((bfd
*));
145 #endif /* COFF_IMAGE_WITH_PE */
147 /**********************************************************************/
149 #ifndef NO_COFF_RELOCS
151 coff_swap_reloc_in (abfd
, src
, dst
)
156 RELOC
*reloc_src
= (RELOC
*) src
;
157 struct internal_reloc
*reloc_dst
= (struct internal_reloc
*) dst
;
159 reloc_dst
->r_vaddr
= bfd_h_get_32(abfd
, (bfd_byte
*)reloc_src
->r_vaddr
);
160 reloc_dst
->r_symndx
= bfd_h_get_signed_32(abfd
, (bfd_byte
*) reloc_src
->r_symndx
);
162 reloc_dst
->r_type
= bfd_h_get_16(abfd
, (bfd_byte
*) reloc_src
->r_type
);
164 #ifdef SWAP_IN_RELOC_OFFSET
165 reloc_dst
->r_offset
= SWAP_IN_RELOC_OFFSET(abfd
,
166 (bfd_byte
*) reloc_src
->r_offset
);
172 coff_swap_reloc_out (abfd
, src
, dst
)
177 struct internal_reloc
*reloc_src
= (struct internal_reloc
*)src
;
178 struct external_reloc
*reloc_dst
= (struct external_reloc
*)dst
;
179 bfd_h_put_32(abfd
, reloc_src
->r_vaddr
, (bfd_byte
*) reloc_dst
->r_vaddr
);
180 bfd_h_put_32(abfd
, reloc_src
->r_symndx
, (bfd_byte
*) reloc_dst
->r_symndx
);
182 bfd_h_put_16(abfd
, reloc_src
->r_type
, (bfd_byte
*)
185 #ifdef SWAP_OUT_RELOC_OFFSET
186 SWAP_OUT_RELOC_OFFSET(abfd
,
188 (bfd_byte
*) reloc_dst
->r_offset
);
190 #ifdef SWAP_OUT_RELOC_EXTRA
191 SWAP_OUT_RELOC_EXTRA(abfd
,reloc_src
, reloc_dst
);
195 #endif /* not NO_COFF_RELOCS */
198 coff_swap_filehdr_in (abfd
, src
, dst
)
203 FILHDR
*filehdr_src
= (FILHDR
*) src
;
204 struct internal_filehdr
*filehdr_dst
= (struct internal_filehdr
*) dst
;
205 filehdr_dst
->f_magic
= bfd_h_get_16(abfd
, (bfd_byte
*) filehdr_src
->f_magic
);
206 filehdr_dst
->f_nscns
= bfd_h_get_16(abfd
, (bfd_byte
*)filehdr_src
-> f_nscns
);
207 filehdr_dst
->f_timdat
= bfd_h_get_32(abfd
, (bfd_byte
*)filehdr_src
-> f_timdat
);
209 filehdr_dst
->f_nsyms
= bfd_h_get_32(abfd
, (bfd_byte
*)filehdr_src
-> f_nsyms
);
210 filehdr_dst
->f_flags
= bfd_h_get_16(abfd
, (bfd_byte
*)filehdr_src
-> f_flags
);
211 filehdr_dst
->f_symptr
= bfd_h_get_32 (abfd
, (bfd_byte
*) filehdr_src
->f_symptr
);
213 #ifdef COFF_IMAGE_WITH_PE
214 /* There are really two magic numbers involved; the magic number
215 that says this is a NT executable (PEI) and the magic number that
216 determines the architecture. The former is DOSMAGIC, stored in
217 the e_magic field. The latter is stored in the f_magic field.
218 If the NT magic number isn't valid, the architecture magic number
219 could be mimicked by some other field (specifically, the number
220 of relocs in section 3). Since this routine can only be called
221 correctly for a PEI file, check the e_magic number here, and, if
222 it doesn't match, clobber the f_magic number so that we don't get
224 if (bfd_h_get_16 (abfd
, (bfd_byte
*) filehdr_src
->e_magic
) != DOSMAGIC
)
225 filehdr_dst
->f_magic
= -1;
228 /* Other people's tools sometimes generate headers with an nsyms but
230 if (filehdr_dst
->f_nsyms
!= 0 && filehdr_dst
->f_symptr
== 0)
232 filehdr_dst
->f_nsyms
= 0;
233 filehdr_dst
->f_flags
|= F_LSYMS
;
236 filehdr_dst
->f_opthdr
= bfd_h_get_16(abfd
,
237 (bfd_byte
*)filehdr_src
-> f_opthdr
);
240 #ifdef COFF_IMAGE_WITH_PE
241 #define coff_swap_filehdr_out _bfd_pei_only_swap_filehdr_out
243 #define coff_swap_filehdr_out _bfd_pe_only_swap_filehdr_out
248 coff_swap_scnhdr_in (abfd
, ext
, in
)
253 SCNHDR
*scnhdr_ext
= (SCNHDR
*) ext
;
254 struct internal_scnhdr
*scnhdr_int
= (struct internal_scnhdr
*) in
;
256 memcpy(scnhdr_int
->s_name
, scnhdr_ext
->s_name
, sizeof(scnhdr_int
->s_name
));
257 scnhdr_int
->s_vaddr
=
258 GET_SCNHDR_VADDR (abfd
, (bfd_byte
*) scnhdr_ext
->s_vaddr
);
259 scnhdr_int
->s_paddr
=
260 GET_SCNHDR_PADDR (abfd
, (bfd_byte
*) scnhdr_ext
->s_paddr
);
262 GET_SCNHDR_SIZE (abfd
, (bfd_byte
*) scnhdr_ext
->s_size
);
263 scnhdr_int
->s_scnptr
=
264 GET_SCNHDR_SCNPTR (abfd
, (bfd_byte
*) scnhdr_ext
->s_scnptr
);
265 scnhdr_int
->s_relptr
=
266 GET_SCNHDR_RELPTR (abfd
, (bfd_byte
*) scnhdr_ext
->s_relptr
);
267 scnhdr_int
->s_lnnoptr
=
268 GET_SCNHDR_LNNOPTR (abfd
, (bfd_byte
*) scnhdr_ext
->s_lnnoptr
);
269 scnhdr_int
->s_flags
= bfd_h_get_32(abfd
, (bfd_byte
*) scnhdr_ext
->s_flags
);
271 /* MS handles overflow of line numbers by carrying into the reloc
272 field (it appears). Since it's supposed to be zero for PE
273 *IMAGE* format, that's safe. This is still a bit iffy. */
274 #ifdef COFF_IMAGE_WITH_PE
275 scnhdr_int
->s_nlnno
=
276 (bfd_h_get_16 (abfd
, (bfd_byte
*) scnhdr_ext
->s_nlnno
)
277 + (bfd_h_get_16 (abfd
, (bfd_byte
*) scnhdr_ext
->s_nreloc
) << 16));
278 scnhdr_int
->s_nreloc
= 0;
280 scnhdr_int
->s_nreloc
= bfd_h_get_16 (abfd
,
281 (bfd_byte
*) scnhdr_ext
->s_nreloc
);
282 scnhdr_int
->s_nlnno
= bfd_h_get_16 (abfd
,
283 (bfd_byte
*) scnhdr_ext
->s_nlnno
);
286 if (scnhdr_int
->s_vaddr
!= 0)
288 scnhdr_int
->s_vaddr
+= pe_data (abfd
)->pe_opthdr
.ImageBase
;
289 scnhdr_int
->s_vaddr
&= 0xffffffff;
292 #ifndef COFF_NO_HACK_SCNHDR_SIZE
293 /* If this section holds uninitialized data, use the virtual size
294 (stored in s_paddr) instead of the physical size. */
295 if ((scnhdr_int
->s_flags
& IMAGE_SCN_CNT_UNINITIALIZED_DATA
) != 0)
297 scnhdr_int
->s_size
= scnhdr_int
->s_paddr
;
298 /* This code used to set scnhdr_int->s_paddr to 0. However,
299 coff_set_alignment_hook stores s_paddr in virt_size, which
300 only works if it correctly holds the virtual size of the
311 abfd
->tdata
.pe_obj_data
=
312 (struct pe_tdata
*) bfd_zalloc (abfd
, sizeof (pe_data_type
));
314 if (abfd
->tdata
.pe_obj_data
== 0)
321 /* in_reloc_p is architecture dependent. */
322 pe
->in_reloc_p
= in_reloc_p
;
326 /* Create the COFF backend specific information. */
328 pe_mkobject_hook (abfd
, filehdr
, aouthdr
)
331 PTR aouthdr ATTRIBUTE_UNUSED
;
333 struct internal_filehdr
*internal_f
= (struct internal_filehdr
*) filehdr
;
336 if (pe_mkobject (abfd
) == false)
340 pe
->coff
.sym_filepos
= internal_f
->f_symptr
;
341 /* These members communicate important constants about the symbol
342 table to GDB's symbol-reading code. These `constants'
343 unfortunately vary among coff implementations... */
344 pe
->coff
.local_n_btmask
= N_BTMASK
;
345 pe
->coff
.local_n_btshft
= N_BTSHFT
;
346 pe
->coff
.local_n_tmask
= N_TMASK
;
347 pe
->coff
.local_n_tshift
= N_TSHIFT
;
348 pe
->coff
.local_symesz
= SYMESZ
;
349 pe
->coff
.local_auxesz
= AUXESZ
;
350 pe
->coff
.local_linesz
= LINESZ
;
352 pe
->coff
.timestamp
= internal_f
->f_timdat
;
354 obj_raw_syment_count (abfd
) =
355 obj_conv_table_size (abfd
) =
358 pe
->real_flags
= internal_f
->f_flags
;
360 if ((internal_f
->f_flags
& F_DLL
) != 0)
363 if ((internal_f
->f_flags
& IMAGE_FILE_DEBUG_STRIPPED
) == 0)
364 abfd
->flags
|= HAS_DEBUG
;
366 #ifdef COFF_IMAGE_WITH_PE
368 pe
->pe_opthdr
= ((struct internal_aouthdr
*)aouthdr
)->pe
;
372 if (! _bfd_coff_arm_set_private_flags (abfd
, internal_f
->f_flags
))
373 coff_data (abfd
) ->flags
= 0;
380 pe_print_private_bfd_data (abfd
, vfile
)
384 FILE *file
= (FILE *) vfile
;
386 if (!_bfd_pe_print_private_bfd_data_common (abfd
, vfile
))
389 if (pe_saved_coff_bfd_print_private_bfd_data
!= NULL
)
393 return pe_saved_coff_bfd_print_private_bfd_data (abfd
, vfile
);
399 /* Copy any private info we understand from the input bfd
400 to the output bfd. */
403 pe_bfd_copy_private_bfd_data (ibfd
, obfd
)
406 if (!_bfd_pe_bfd_copy_private_bfd_data_common (ibfd
, obfd
))
409 if (pe_saved_coff_bfd_copy_private_bfd_data
)
410 return pe_saved_coff_bfd_copy_private_bfd_data (ibfd
, obfd
);
415 #define coff_bfd_copy_private_section_data \
416 _bfd_pe_bfd_copy_private_section_data
418 #define coff_get_symbol_info _bfd_pe_get_symbol_info
420 #ifdef COFF_IMAGE_WITH_PE
422 /* Code to handle Microsoft's Image Library Format.
423 Also known as LINK6 format.
424 Documentation about this format can be found at:
426 http://msdn.microsoft.com/library/specs/pecoff_section8.htm */
428 /* The following constants specify the sizes of the various data
429 structures that we have to create in order to build a bfd describing
430 an ILF object file. The final "+ 1" in the definitions of SIZEOF_IDATA6
431 and SIZEOF_IDATA7 below is to allow for the possibility that we might
432 need a padding byte in order to ensure 16 bit alignment for the section's
435 The value for SIZEOF_ILF_STRINGS is computed as follows:
437 There will be NUM_ILF_SECTIONS section symbols. Allow 9 characters
438 per symbol for their names (longest section name is .idata$x).
440 There will be two symbols for the imported value, one the symbol name
441 and one with _imp__ prefixed. Allowing for the terminating nul's this
442 is strlen (symbol_name) * 2 + 8 + 21 + strlen (source_dll).
444 The strings in the string table must start STRING__SIZE_SIZE bytes into
445 the table in order to for the string lookup code in coffgen/coffcode to
447 #define NUM_ILF_RELOCS 8
448 #define NUM_ILF_SECTIONS 6
449 #define NUM_ILF_SYMS (2 + NUM_ILF_SECTIONS)
451 #define SIZEOF_ILF_SYMS (NUM_ILF_SYMS * sizeof (* vars.sym_cache))
452 #define SIZEOF_ILF_SYM_TABLE (NUM_ILF_SYMS * sizeof (* vars.sym_table))
453 #define SIZEOF_ILF_NATIVE_SYMS (NUM_ILF_SYMS * sizeof (* vars.native_syms))
454 #define SIZEOF_ILF_SYM_PTR_TABLE (NUM_ILF_SYMS * sizeof (* vars.sym_ptr_table))
455 #define SIZEOF_ILF_EXT_SYMS (NUM_ILF_SYMS * sizeof (* vars.esym_table))
456 #define SIZEOF_ILF_RELOCS (NUM_ILF_RELOCS * sizeof (* vars.reltab))
457 #define SIZEOF_ILF_INT_RELOCS (NUM_ILF_RELOCS * sizeof (* vars.int_reltab))
458 #define SIZEOF_ILF_STRINGS (strlen (symbol_name) * 2 + 8 \
459 + 21 + strlen (source_dll) \
460 + NUM_ILF_SECTIONS * 9 \
462 #define SIZEOF_IDATA2 (5 * 4)
463 #define SIZEOF_IDATA4 (1 * 4)
464 #define SIZEOF_IDATA5 (1 * 4)
465 #define SIZEOF_IDATA6 (2 + strlen (symbol_name) + 1 + 1)
466 #define SIZEOF_IDATA7 (strlen (source_dll) + 1 + 1)
467 #define SIZEOF_ILF_SECTIONS (NUM_ILF_SECTIONS * sizeof (struct coff_section_tdata))
469 #define ILF_DATA_SIZE \
470 sizeof (* vars.bim) \
472 + SIZEOF_ILF_SYM_TABLE \
473 + SIZEOF_ILF_NATIVE_SYMS \
474 + SIZEOF_ILF_SYM_PTR_TABLE \
475 + SIZEOF_ILF_EXT_SYMS \
476 + SIZEOF_ILF_RELOCS \
477 + SIZEOF_ILF_INT_RELOCS \
478 + SIZEOF_ILF_STRINGS \
484 + SIZEOF_ILF_SECTIONS \
485 + MAX_TEXT_SECTION_SIZE
488 /* Create an empty relocation against the given symbol. */
490 pe_ILF_make_a_symbol_reloc (pe_ILF_vars
* vars
,
492 bfd_reloc_code_real_type reloc
,
493 struct symbol_cache_entry
** sym
,
494 unsigned int sym_index
)
497 struct internal_reloc
* internal
;
499 entry
= vars
->reltab
+ vars
->relcount
;
500 internal
= vars
->int_reltab
+ vars
->relcount
;
502 entry
->address
= address
;
504 entry
->howto
= bfd_reloc_type_lookup (vars
->abfd
, reloc
);
505 entry
->sym_ptr_ptr
= sym
;
507 internal
->r_vaddr
= address
;
508 internal
->r_symndx
= sym_index
;
509 internal
->r_type
= entry
->howto
->type
;
510 #if 0 /* These fields do not need to be initialised. */
511 internal
->r_size
= 0;
512 internal
->r_extern
= 0;
513 internal
->r_offset
= 0;
518 BFD_ASSERT (vars
->relcount
<= NUM_ILF_RELOCS
);
521 /* Create an empty relocation against the given section. */
523 pe_ILF_make_a_reloc (pe_ILF_vars
* vars
,
525 bfd_reloc_code_real_type reloc
,
528 pe_ILF_make_a_symbol_reloc (vars
, address
, reloc
, sec
->symbol_ptr_ptr
,
529 coff_section_data (vars
->abfd
, sec
)->i
);
532 /* Move the queued relocs into the given section. */
534 pe_ILF_save_relocs (pe_ILF_vars
* vars
,
537 /* Make sure that there is somewhere to store the internal relocs. */
538 if (coff_section_data (vars
->abfd
, sec
) == NULL
)
539 /* We should probably return an error indication here. */
542 coff_section_data (vars
->abfd
, sec
)->relocs
= vars
->int_reltab
;
543 coff_section_data (vars
->abfd
, sec
)->keep_relocs
= true;
545 sec
->relocation
= vars
->reltab
;
546 sec
->reloc_count
= vars
->relcount
;
547 sec
->flags
|= SEC_RELOC
;
549 vars
->reltab
+= vars
->relcount
;
550 vars
->int_reltab
+= vars
->relcount
;
553 BFD_ASSERT ((bfd_byte
*)vars
->int_reltab
< (bfd_byte
*)vars
->string_table
);
556 /* Create a global symbol and add it to the relevant tables. */
558 pe_ILF_make_a_symbol (pe_ILF_vars
* vars
,
560 const char * symbol_name
,
561 asection_ptr section
,
562 flagword extra_flags
)
564 coff_symbol_type
* sym
;
565 combined_entry_type
* ent
;
567 unsigned short sclass
;
569 if (extra_flags
& BSF_LOCAL
)
575 if (vars
->magic
== THUMBPEMAGIC
)
577 if (extra_flags
& BSF_FUNCTION
)
578 sclass
= C_THUMBEXTFUNC
;
579 else if (extra_flags
& BSF_LOCAL
)
580 sclass
= C_THUMBSTAT
;
586 BFD_ASSERT (vars
->sym_index
< NUM_ILF_SYMS
);
589 ent
= vars
->native_ptr
;
590 esym
= vars
->esym_ptr
;
592 /* Copy the symbol's name into the string table. */
593 sprintf (vars
->string_ptr
, "%s%s", prefix
, symbol_name
);
595 /* Initialise the external symbol. */
596 bfd_h_put_32 (vars
->abfd
, vars
->string_ptr
- vars
->string_table
, (bfd_byte
*) esym
->e
.e
.e_offset
);
598 bfd_h_put_16 (vars
->abfd
, section
->target_index
, (bfd_byte
*) esym
->e_scnum
);
600 bfd_h_put_16 (vars
->abfd
, 0, (bfd_byte
*) esym
->e_scnum
);
602 esym
->e_sclass
[0] = sclass
;
604 /* The following initialisations are unnecessary - the memory is
605 zero initialised. They are just kept here as reminders. */
607 esym
->e
.e
.e_zeroes
= 0;
609 esym
->e_type
= T_NULL
;
613 /* Initialise the internal symbol structure. */
614 ent
->u
.syment
.n_sclass
= sclass
;
616 ent
->u
.syment
.n_scnum
= section
->target_index
;
617 ent
->u
.syment
._n
._n_n
._n_offset
= (long) sym
;
619 #if 0 /* See comment above. */
620 ent
->u
.syment
.n_value
= 0;
621 ent
->u
.syment
.n_flags
= 0;
622 ent
->u
.syment
.n_type
= T_NULL
;
623 ent
->u
.syment
.n_numaux
= 0;
627 sym
->symbol
.the_bfd
= vars
->abfd
;
628 sym
->symbol
.name
= vars
->string_ptr
;
629 sym
->symbol
.flags
= BSF_EXPORT
| BSF_GLOBAL
| extra_flags
;
630 sym
->symbol
.section
= section
;
633 #if 0 /* See comment above. */
634 sym
->symbol
.value
= 0;
635 sym
->symbol
.udata
.i
= 0;
636 sym
->done_lineno
= false;
640 * vars
->table_ptr
= vars
->sym_index
;
641 * vars
->sym_ptr_ptr
= sym
;
643 /* Adjust pointers for the next symbol. */
646 vars
->sym_ptr_ptr
++;
650 vars
->string_ptr
+= strlen (symbol_name
) + strlen (prefix
) + 1;
652 BFD_ASSERT (vars
->string_ptr
< vars
->end_string_ptr
);
655 /* Create a section. */
657 pe_ILF_make_a_section (pe_ILF_vars
* vars
,
660 flagword extra_flags
)
665 sec
= bfd_make_section_old_way (vars
->abfd
, name
);
669 flags
= SEC_HAS_CONTENTS
| SEC_ALLOC
| SEC_LOAD
| SEC_KEEP
| SEC_IN_MEMORY
;
671 bfd_set_section_flags (vars
->abfd
, sec
, flags
| extra_flags
);
673 bfd_set_section_alignment (vars
->abfd
, sec
, 2);
675 /* Check that we will not run out of space. */
676 BFD_ASSERT (vars
->data
+ size
< vars
->bim
->buffer
+ vars
->bim
->size
);
678 /* Set the section size and contents. The actual
679 contents are filled in by our parent. */
680 bfd_set_section_size (vars
->abfd
, sec
, size
);
681 sec
->contents
= vars
->data
;
682 sec
->target_index
= vars
->sec_index
++;
684 /* Advance data pointer in the vars structure. */
687 /* Skip the padding byte if it was not needed.
688 The logic here is that if the string length is odd,
689 then the entire string length, including the null byte,
690 is even and so the extra, padding byte, is not needed. */
694 /* Create a coff_section_tdata structure for our use. */
695 sec
->used_by_bfd
= (struct coff_section_tdata
*) vars
->data
;
696 vars
->data
+= sizeof (struct coff_section_tdata
);
698 BFD_ASSERT (vars
->data
<= vars
->bim
->buffer
+ vars
->bim
->size
);
700 /* Create a symbol to refer to this section. */
701 pe_ILF_make_a_symbol (vars
, "", name
, sec
, BSF_LOCAL
);
703 /* Cache the index to the symbol in the coff_section_data structure. */
704 coff_section_data (vars
->abfd
, sec
)->i
= vars
->sym_index
- 1;
709 /* This structure contains the code that goes into the .text section
710 in order to perform a jump into the DLL lookup table. The entries
711 in the table are index by the magic number used to represent the
712 machine type in the PE file. The contents of the data[] arrays in
713 these entries are stolen from the jtab[] arrays in ld/pe-dll.c.
714 The SIZE field says how many bytes in the DATA array are actually
715 used. The OFFSET field says where in the data array the address
716 of the .idata$5 section should be placed. */
717 #define MAX_TEXT_SECTION_SIZE 32
721 unsigned short magic
;
722 unsigned char data
[MAX_TEXT_SECTION_SIZE
];
728 static jump_table jtab
[] =
732 { 0xff, 0x25, 0x00, 0x00, 0x00, 0x00, 0x90, 0x90 },
738 { MC68MAGIC
, { /* XXX fill me in */ }, 0, 0 },
740 #ifdef MIPS_ARCH_MAGIC_WINCE
741 { MIPS_ARCH_MAGIC_WINCE
,
742 { 0x00, 0x00, 0x08, 0x3c, 0x00, 0x00, 0x08, 0x8d,
743 0x08, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00 },
748 #ifdef SH_ARCH_MAGIC_WINCE
749 { SH_ARCH_MAGIC_WINCE
,
750 { 0x01, 0xd0, 0x02, 0x60, 0x2b, 0x40,
751 0x09, 0x00, 0x00, 0x00, 0x00, 0x00 },
758 { 0x00, 0xc0, 0x9f, 0xe5, 0x00, 0xf0,
759 0x9c, 0xe5, 0x00, 0x00, 0x00, 0x00},
766 { 0x40, 0xb4, 0x02, 0x4e, 0x36, 0x68, 0xb4, 0x46,
767 0x40, 0xbc, 0x60, 0x47, 0x00, 0x00, 0x00, 0x00 },
775 #define NUM_ENTRIES(a) (sizeof (a) / sizeof (a)[0])
778 /* Build a full BFD from the information supplied in a ILF object. */
780 pe_ILF_build_a_bfd (bfd
* abfd
,
781 unsigned short magic
,
782 bfd_byte
* symbol_name
,
783 bfd_byte
* source_dll
,
784 unsigned int ordinal
,
789 struct internal_filehdr internal_f
;
790 unsigned int import_type
;
791 unsigned int import_name_type
;
792 asection_ptr id4
, id5
, id6
= NULL
, text
= NULL
;
793 coff_symbol_type
** imp_sym
;
794 unsigned int imp_index
;
796 /* Decode and verify the types field of the ILF structure. */
797 import_type
= types
& 0x3;
798 import_name_type
= (types
& 0x1c) >> 2;
807 /* XXX code yet to be written. */
808 _bfd_error_handler (_("%s: Unhandled import type; %x"),
809 bfd_get_filename (abfd
), import_type
);
813 _bfd_error_handler (_("%s: Unrecognised import type; %x"),
814 bfd_get_filename (abfd
), import_type
);
818 switch (import_name_type
)
822 case IMPORT_NAME_NOPREFIX
:
823 case IMPORT_NAME_UNDECORATE
:
827 _bfd_error_handler (_("%s: Unrecognised import name type; %x"),
828 bfd_get_filename (abfd
), import_name_type
);
832 /* Initialise local variables.
834 Note these are kept in a structure rather than being
835 declared as statics since bfd frowns on global variables.
837 We are going to construct the contents of the BFD in memory,
838 so allocate all the space that we will need right now. */
839 ptr
= bfd_zalloc (abfd
, ILF_DATA_SIZE
);
843 /* Create a bfd_in_memory structure. */
844 vars
.bim
= (struct bfd_in_memory
*) ptr
;
845 vars
.bim
->buffer
= ptr
;
846 vars
.bim
->size
= ILF_DATA_SIZE
;
847 ptr
+= sizeof (* vars
.bim
);
849 /* Initialise the pointers to regions of the memory and the
850 other contents of the pe_ILF_vars structure as well. */
851 vars
.sym_cache
= (coff_symbol_type
*) ptr
;
852 vars
.sym_ptr
= (coff_symbol_type
*) ptr
;
854 ptr
+= SIZEOF_ILF_SYMS
;
856 vars
.sym_table
= (unsigned int *) ptr
;
857 vars
.table_ptr
= (unsigned int *) ptr
;
858 ptr
+= SIZEOF_ILF_SYM_TABLE
;
860 vars
.native_syms
= (combined_entry_type
*) ptr
;
861 vars
.native_ptr
= (combined_entry_type
*) ptr
;
862 ptr
+= SIZEOF_ILF_NATIVE_SYMS
;
864 vars
.sym_ptr_table
= (coff_symbol_type
**) ptr
;
865 vars
.sym_ptr_ptr
= (coff_symbol_type
**) ptr
;
866 ptr
+= SIZEOF_ILF_SYM_PTR_TABLE
;
868 vars
.esym_table
= (SYMENT
*) ptr
;
869 vars
.esym_ptr
= (SYMENT
*) ptr
;
870 ptr
+= SIZEOF_ILF_EXT_SYMS
;
872 vars
.reltab
= (arelent
*) ptr
;
874 ptr
+= SIZEOF_ILF_RELOCS
;
876 vars
.int_reltab
= (struct internal_reloc
*) ptr
;
877 ptr
+= SIZEOF_ILF_INT_RELOCS
;
879 vars
.string_table
= ptr
;
880 vars
.string_ptr
= ptr
+ STRING_SIZE_SIZE
;
881 ptr
+= SIZEOF_ILF_STRINGS
;
882 vars
.end_string_ptr
= ptr
;
884 /* The remaining space in bim->buffer is used
885 by the pe_ILF_make_a_section() function. */
891 /* Create the initial .idata$<n> sections:
892 [.idata$2: Import Directory Table -- not needed]
893 .idata$4: Import Lookup Table
894 .idata$5: Import Address Table
896 Note we do not create a .idata$3 section as this is
897 created for us by the linker script. */
898 id4
= pe_ILF_make_a_section (& vars
, ".idata$4", SIZEOF_IDATA4
, 0);
899 id5
= pe_ILF_make_a_section (& vars
, ".idata$5", SIZEOF_IDATA5
, 0);
900 if (id4
== NULL
|| id5
== NULL
)
903 /* Fill in the contents of these sections. */
904 if (import_name_type
== IMPORT_ORDINAL
)
907 /* XXX - treat as IMPORT_NAME ??? */
910 * (unsigned int *) id4
->contents
= ordinal
| 0x80000000UL
;
911 * (unsigned int *) id5
->contents
= ordinal
| 0x80000000UL
;
917 /* Create .idata$6 - the Hint Name Table. */
918 id6
= pe_ILF_make_a_section (& vars
, ".idata$6", SIZEOF_IDATA6
, 0);
922 /* If necessary, trim the import symbol name. */
923 symbol
= symbol_name
;
925 if (import_name_type
!= IMPORT_NAME
)
926 /* Skip any prefix in symbol_name. */
927 while (*symbol
== '@' || * symbol
== '?' || * symbol
== '_')
930 if (import_name_type
== IMPORT_NAME_UNDECORATE
)
932 /* Truncate at the first '@' */
933 while (* symbol
!= 0 && * symbol
!= '@')
939 id6
->contents
[0] = ordinal
& 0xff;
940 id6
->contents
[1] = ordinal
>> 8;
942 strcpy (id6
->contents
+ 2, symbol
);
945 if (import_name_type
!= IMPORT_ORDINAL
)
947 pe_ILF_make_a_reloc (& vars
, 0, BFD_RELOC_RVA
, id6
);
948 pe_ILF_save_relocs (& vars
, id4
);
950 pe_ILF_make_a_reloc (& vars
, 0, BFD_RELOC_RVA
, id6
);
951 pe_ILF_save_relocs (& vars
, id5
);
954 /* Create extra sections depending upon the type of import we are dealing with. */
960 /* Create a .text section.
961 First we need to look up its contents in the jump table. */
962 for (i
= NUM_ENTRIES (jtab
); i
--;)
964 if (jtab
[i
].size
== 0)
966 if (jtab
[i
].magic
== magic
)
969 /* If we did not find a matching entry something is wrong. */
973 /* Create the .text section. */
974 text
= pe_ILF_make_a_section (& vars
, ".text", jtab
[i
].size
, SEC_CODE
);
978 /* Copy in the jump code. */
979 memcpy (text
->contents
, jtab
[i
].data
, jtab
[i
].size
);
981 /* Create an import symbol. */
982 pe_ILF_make_a_symbol (& vars
, "__imp_", symbol_name
, id5
, 0);
983 imp_sym
= vars
.sym_ptr_ptr
- 1;
984 imp_index
= vars
.sym_index
- 1;
986 /* Create a reloc for the data in the text section. */
987 #ifdef MIPS_ARCH_MAGIC_WINCE
988 if (magic
== MIPS_ARCH_MAGIC_WINCE
)
990 pe_ILF_make_a_symbol_reloc (& vars
, 0, BFD_RELOC_HI16_S
,
991 (asection
**) imp_sym
, imp_index
);
992 pe_ILF_make_a_reloc (& vars
, 0, BFD_RELOC_LO16
, text
);
993 pe_ILF_make_a_symbol_reloc (& vars
, 4, BFD_RELOC_LO16
,
994 (asection
**) imp_sym
, imp_index
);
998 pe_ILF_make_a_symbol_reloc (& vars
, jtab
[i
].offset
, BFD_RELOC_32
,
999 (asymbol
**) imp_sym
, imp_index
);
1001 pe_ILF_save_relocs (& vars
, text
);
1008 /* XXX code not yet written. */
1012 /* Initialise the bfd. */
1013 memset (& internal_f
, 0, sizeof (internal_f
));
1015 internal_f
.f_magic
= magic
;
1016 internal_f
.f_symptr
= 0;
1017 internal_f
.f_nsyms
= 0;
1018 internal_f
.f_flags
= F_AR32WR
| F_LNNO
; /* XXX is this correct ? */
1020 if ( ! bfd_set_start_address (abfd
, 0)
1021 || ! bfd_coff_set_arch_mach_hook (abfd
, & internal_f
))
1024 if (bfd_coff_mkobject_hook (abfd
, (PTR
) & internal_f
, NULL
) == NULL
)
1027 coff_data (abfd
)->pe
= 1;
1029 if (vars
.magic
== THUMBPEMAGIC
)
1030 /* Stop some linker warnings about thumb code not supporting interworking. */
1031 coff_data (abfd
)->flags
|= F_INTERWORK
| F_INTERWORK_SET
;
1034 /* Switch from file contents to memory contents. */
1035 bfd_cache_close (abfd
);
1037 abfd
->iostream
= (PTR
) vars
.bim
;
1038 abfd
->flags
|= BFD_IN_MEMORY
/* | HAS_LOCALS */;
1040 obj_sym_filepos (abfd
) = 0;
1042 /* Now create a symbol describing the imported value. */
1043 switch (import_type
)
1048 pe_ILF_make_a_symbol (& vars
, "", symbol_name
, text
,
1049 BSF_NOT_AT_END
| BSF_FUNCTION
);
1051 /* Create an import symbol for the DLL, without the
1053 ptr
= strrchr (source_dll
, '.');
1056 pe_ILF_make_a_symbol (& vars
, "__IMPORT_DESCRIPTOR_", source_dll
, NULL
, 0);
1062 /* Nothing to do here. */
1066 /* XXX code not yet written. */
1070 /* Point the bfd at the symbol table. */
1071 obj_symbols (abfd
) = vars
.sym_cache
;
1072 bfd_get_symcount (abfd
) = vars
.sym_index
;
1074 obj_raw_syments (abfd
) = vars
.native_syms
;
1075 obj_raw_syment_count (abfd
) = vars
.sym_index
;
1077 obj_coff_external_syms (abfd
) = (PTR
) vars
.esym_table
;
1078 obj_coff_keep_syms (abfd
) = true;
1080 obj_convert (abfd
) = vars
.sym_table
;
1081 obj_conv_table_size (abfd
) = vars
.sym_index
;
1083 obj_coff_strings (abfd
) = vars
.string_table
;
1084 obj_coff_keep_strings (abfd
) = true;
1086 abfd
->flags
|= HAS_SYMS
;
1091 /* We have detected a Image Library Format archive element.
1092 Decode the element and return the appropriate target. */
1093 static const bfd_target
*
1094 pe_ILF_object_p (bfd
* abfd
)
1096 bfd_byte buffer
[16];
1098 bfd_byte
* symbol_name
;
1099 bfd_byte
* source_dll
;
1100 unsigned int machine
;
1102 unsigned int ordinal
;
1104 unsigned short magic
;
1106 /* Upon entry the first four buyes of the ILF header have
1107 already been read. Now read the rest of the header. */
1108 if (bfd_read (buffer
, 1, 16, abfd
) != 16)
1113 /* We do not bother to check the version number.
1114 version = bfd_h_get_16 (abfd, ptr); */
1117 machine
= bfd_h_get_16 (abfd
, ptr
);
1120 /* Check that the machine type is recognised. */
1125 case IMAGE_FILE_MACHINE_UNKNOWN
:
1126 case IMAGE_FILE_MACHINE_ALPHA
:
1127 case IMAGE_FILE_MACHINE_ALPHA64
:
1128 case IMAGE_FILE_MACHINE_IA64
:
1131 case IMAGE_FILE_MACHINE_I386
:
1137 case IMAGE_FILE_MACHINE_M68K
:
1143 case IMAGE_FILE_MACHINE_R3000
:
1144 case IMAGE_FILE_MACHINE_R4000
:
1145 case IMAGE_FILE_MACHINE_R10000
:
1147 case IMAGE_FILE_MACHINE_MIPS16
:
1148 case IMAGE_FILE_MACHINE_MIPSFPU
:
1149 case IMAGE_FILE_MACHINE_MIPSFPU16
:
1150 #ifdef MIPS_ARCH_MAGIC_WINCE
1151 magic
= MIPS_ARCH_MAGIC_WINCE
;
1155 case IMAGE_FILE_MACHINE_SH3
:
1156 case IMAGE_FILE_MACHINE_SH4
:
1157 #ifdef SH_ARCH_MAGIC_WINCE
1158 magic
= SH_ARCH_MAGIC_WINCE
;
1162 case IMAGE_FILE_MACHINE_ARM
:
1168 case IMAGE_FILE_MACHINE_THUMB
:
1171 extern bfd_target armpei_little_vec
;
1173 if (abfd
->xvec
== & armpei_little_vec
)
1174 magic
= THUMBPEMAGIC
;
1179 case IMAGE_FILE_MACHINE_POWERPC
:
1180 /* We no longer support PowerPC. */
1184 _("%s: Unrecognised machine type (0x%x) in Import Library Format archive"),
1185 bfd_get_filename (abfd
), machine
);
1186 bfd_set_error (bfd_error_malformed_archive
);
1196 _("%s: Recognised but unhandled machine type (0x%x) in Import Library Format archive"),
1197 bfd_get_filename (abfd
), machine
);
1198 bfd_set_error (bfd_error_wrong_format
);
1203 /* We do not bother to check the date.
1204 date = bfd_h_get_32 (abfd, ptr); */
1207 size
= bfd_h_get_32 (abfd
, ptr
);
1213 (_("%s: size field is zero in Import Library Format header"),
1214 bfd_get_filename (abfd
));
1215 bfd_set_error (bfd_error_malformed_archive
);
1220 ordinal
= bfd_h_get_16 (abfd
, ptr
);
1223 types
= bfd_h_get_16 (abfd
, ptr
);
1226 /* Now read in the two strings that follow. */
1227 ptr
= bfd_alloc (abfd
, size
);
1231 if (bfd_read (ptr
, 1, size
, abfd
) != size
)
1235 source_dll
= ptr
+ strlen (ptr
) + 1;
1237 /* Verify that the strings are null terminated. */
1238 if (ptr
[size
- 1] != 0 || ((unsigned long) (source_dll
- ptr
) >= size
))
1241 (_("%s: string not null terminated in ILF object file."),
1242 bfd_get_filename (abfd
));
1243 bfd_set_error (bfd_error_malformed_archive
);
1248 /* Now construct the bfd. */
1249 if (! pe_ILF_build_a_bfd (abfd
, magic
, symbol_name
,
1250 source_dll
, ordinal
, types
))
1256 static const bfd_target
*
1257 pe_bfd_object_p (bfd
* abfd
)
1259 /* We need to handle a PE image correctly. In PE images created by
1260 the GNU linker, the offset to the COFF header is always the size.
1261 However, this is not the case in images generated by other PE
1262 linkers. The PE format stores a four byte offset to the PE
1263 signature just before the COFF header at location 0x3c of the file.
1264 We pick up that offset, verify that the PE signature is there, and
1265 then set ourselves up to read in the COFF header. */
1268 unsigned long signature
;
1270 /* Detect if this a Microsoft Import Library Format element. */
1271 if (bfd_seek (abfd
, 0x00, SEEK_SET
) != 0
1272 || bfd_read (buffer
, 1, 4, abfd
) != 4)
1274 if (bfd_get_error () != bfd_error_system_call
)
1275 bfd_set_error (bfd_error_wrong_format
);
1279 signature
= bfd_h_get_32 (abfd
, buffer
);
1281 if (signature
== 0xffff0000)
1282 return pe_ILF_object_p (abfd
);
1284 if (bfd_seek (abfd
, 0x3c, SEEK_SET
) != 0
1285 || bfd_read (buffer
, 1, 4, abfd
) != 4)
1287 if (bfd_get_error () != bfd_error_system_call
)
1288 bfd_set_error (bfd_error_wrong_format
);
1292 offset
= bfd_h_get_32 (abfd
, buffer
);
1294 if (bfd_seek (abfd
, offset
, SEEK_SET
) != 0
1295 || bfd_read (buffer
, 1, 4, abfd
) != 4)
1297 if (bfd_get_error () != bfd_error_system_call
)
1298 bfd_set_error (bfd_error_wrong_format
);
1302 signature
= bfd_h_get_32 (abfd
, buffer
);
1304 if (signature
!= 0x4550)
1306 bfd_set_error (bfd_error_wrong_format
);
1310 /* Here is the hack. coff_object_p wants to read filhsz bytes to
1311 pick up the COFF header. We adjust so that that will work. 20
1312 is the size of the i386 COFF filehdr. */
1315 - bfd_coff_filhsz (abfd
)
1320 if (bfd_get_error () != bfd_error_system_call
)
1321 bfd_set_error (bfd_error_wrong_format
);
1325 return coff_object_p (abfd
);
1328 #define coff_object_p pe_bfd_object_p
1329 #endif /* COFF_IMAGE_WITH_PE */